OK, I like my shiny new toy. From my personal diving experience and log books, I know I have smaller lung volume and go through less air than my husband. I think the "For Her" program uses smaller pressure increments when it jumps up pressure when needed. The smaller increments work better with my smaller lung volume and reduce discomfort that would wake me when I used the S9.
My 2 cents worth.
Actually my question was more like: Why an Autoset for Her? Why not a VPAP Auto for Her? Or maybe an ASV for Her.
I was just looking up the "features" and definitions tonight. I think mine is like an ASV. I find it hard to understand all the trademarked terms.
Even in companies that do research, marketing decisions are often made by the CEO (or what his wife likes).
There's no reason for more than one AirSense model--the AutoSet with both for him and for her algorithms along with the basic CPAP mode-- no "CPAP" brick or "Elite" model--just one. It would make DME's inventory easier to manage too. This is Medicare basic CPAP billing code E0601.
The same applies to bi-level AirCurves. One could include basic CPAP, S, T, and Auto modes. This is the bilevel billing code E0470.
The ST and the ASV could also be combined into one unit with basic CPAP, ST, and ASV modes. This is bilevel with backup breathing rate, E0471.